EP3254127B1 - Testeur de transformateur et procédé de test d'un transformateur à trois enroulements - Google Patents

Testeur de transformateur et procédé de test d'un transformateur à trois enroulements Download PDF

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Publication number
EP3254127B1
EP3254127B1 EP16702942.0A EP16702942A EP3254127B1 EP 3254127 B1 EP3254127 B1 EP 3254127B1 EP 16702942 A EP16702942 A EP 16702942A EP 3254127 B1 EP3254127 B1 EP 3254127B1
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EP
European Patent Office
Prior art keywords
transformer
winding
expansion device
testing device
test
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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EP16702942.0A
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German (de)
English (en)
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EP3254127A1 (fr
Inventor
Reinhard Kaufmann
Ulrich Klapper
Markus PÜTTER
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Omicron Electronics GmbH
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Omicron Electronics GmbH
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Priority to PL16702942T priority Critical patent/PL3254127T3/pl
Publication of EP3254127A1 publication Critical patent/EP3254127A1/fr
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/62—Testing of transformers

Definitions

  • Embodiments of the invention relate to a device and a method for testing a transformer. Embodiments of the invention relate in particular to such devices and methods with which at least one parameter of a three-winding transformer can be determined.
  • Transformers are used as components of energy supply networks. Transformers can be used for voltage conversion from a first value on a high voltage side to a second value, which is smaller than the first value, on a low voltage side.
  • the determination of properties of the transformer by a transformer test in which one or more characteristic parameters of the transformer are determined by measurement, is necessary, for example, to ensure operational safety, for control or for other reasons.
  • Examples of such measurements include the determination of a static resistance, a transmission ratio, a leakage inductance or leakage reactance.
  • Three-winding transformers are widely used in technology, for example to form different vector groups.
  • Three-winding transformers can be designed, for example, as single-phase three-winding transformers or three-phase three-winding transformers.
  • Three-winding transformers of different vector groups which describe the interconnection of primary, secondary and tertiary windings, are used.
  • the invention relates to a transformer testing device according to claim 1, an expansion device according to claim 5 and a method according to claim 14.
  • connections and couplings shown in the figures between functional units and elements can also be implemented as indirect connections or couplings.
  • a connection or coupling can be implemented in a wired or wireless manner.
  • the three-winding transformer can be a transformer for high or medium voltage networks.
  • the three-winding transformer can be a transformer installed in a power plant or substation.
  • the transformer test device can be a mobile device or can be composed of several mobile devices in order to allow the measurements to be carried out on the installed transformer.
  • the transformer testing device can be configured to be connected to at least one primary winding, one secondary winding and one tertiary winding of the three-winding transformer at the same time.
  • the primary winding that secondary winding and the tertiary winding can have the same transformer core.
  • the transformer testing device can have one or more connections in addition to at least one first connection for connection to a primary winding and at least one second connection for connection with a secondary winding, in order to allow the simultaneous connection to the tertiary winding of the three-winding transformer .
  • the transformer testing device can be designed such that an expansion device is reversibly detachably connected to a transformer testing device in order to enable the transformer testing device to be connected to at least one primary winding, one secondary winding and one tertiary winding of the three-winding transformer at the same time.
  • different parameters of the transformer can be determined automatically. For example, several transformation ratios of the transformer can be determined automatically without having to rewiring. Other parameters such as static or dynamic resistances or a leakage reactance and / or a leakage inductance of the transformer can also be determined. For this purpose, a test response can be evaluated by the transformer test device, which is recorded as a reaction to a test signal.
  • Figure 1 shows a system 1 with a transformer testing device 2 for determining a parameter of a three-winding transformer 60 according to an embodiment.
  • the system 1 comprises the three-winding transformer 60 and the transformer testing device 2.
  • the transformer testing device 2 can be designed as a single device with a housing.
  • the transformer testing device 2 can consist of an arrangement of several devices 10, 40 or devices, as in FIG Figure 1 is shown. In this case, the multiple devices or devices can be controlled by a central controller.
  • the transformer testing device 2 can comprise a transformer testing device 10 and an expansion device 40 connected to it.
  • the transformer testing device 10 can be used as a mobile device and in particular be designed as a portable device.
  • the expansion device 40 can be designed as a mobile device and in particular as a portable device.
  • transformer test apparatus 2 has additional connections in order to enable simultaneous connection to the windings of the three-winding transformer 60.
  • transformer tester 10 may include terminals for connection to a primary winding and a secondary winding of three-winding transformer 60
  • expansion device 40 may include multiple terminals 40 for connection to one or more tertiary windings of three-winding transformer 60.
  • the expansion device 40 can include a plurality of connections 40 for connection to one or more primary windings and / or for connection to one or more primary windings of the three-winding transformer 60.
  • the three-winding transformer 60 can be a power transformer of an electrical energy supply device.
  • the three-winding transformer 60 can be permanently installed in a power station or substation, while a transformer test is carried out with the transformer testing device 2.
  • the three winding transformer 60 can be a voltage converter or a current converter.
  • the three-winding transformer 60 can be a voltage converter or a current converter that works on the inductive principle.
  • the three winding transformer 60 includes at least one primary winding, at least one secondary winding, and at least one tertiary winding. Several windings can be combined in vector groups in a manner known per se.
  • the transformer test device 2 comprises a plurality of connections 12 for connection to the three-winding transformer 60, a source 13 for a test signal that is applied to or impressed on the three-winding transformer 60 as a test object during the transformer test, and an evaluation device 18.
  • One or more measuring devices 14, 16 for detecting a test response of the three-winding transformer 60 can be integrated into the transformer test device 2.
  • One or more controllable switching means 15 can be integrated into the transformer testing device 2.
  • the source 13, at least one measuring device 14, 16 and an evaluation device 18 can be installed in a housing 11 of the transformer testing device 10.
  • the transformer testing device 2 can comprise a measuring device 14 ′ for detecting a current intensity of the source 13.
  • the measuring device 14 ′ can be integrated into the source 13.
  • the source 13 can be a current source which is controllable in order to generate an alternating current as a test signal.
  • the source 13 can be controllable in order to generate alternating currents with several different frequencies as a test signal.
  • the source 13 can also be a voltage source.
  • the source 13 can be operated in different operating modes, for example as a current source or as a voltage source and / or as a source of a signal that is constant over time or an alternating signal.
  • the test signal generated by the source 13 can be impressed on the low voltage side 43 via the connections 13 and the lines 35.
  • the transformer testing device 2 comprises an expansion device 40.
  • the expansion device 40 can be configured separately from the transformer testing device 10.
  • the expansion device 40 can be designed for electronic and optionally also mechanical coupling with the transformer testing device 10.
  • additional connections 44 can be provided with which the transformer testing device 2 formed from the transformer testing device 10 and the expansion device 40 can be connected to at least one primary winding, at least one secondary winding and at least one tertiary winding of the three-winding transformer 60 at the same time can be.
  • the expansion device 40 can comprise at least one device 43 which is coupled to the connections 44.
  • the device 43 can comprise a controllable switching means with which a winding of the three-winding transformer 60 is short-circuited by the expansion device 40 in such a way that a short-circuit current flows through the expansion device 40.
  • the device 43 can comprise a current or voltage measuring device.
  • the expansion device 40 has an interface 41 for communication with an interface 20 of the transformer testing device 10.
  • the interface 41 of the expansion device 40 can be a digital interface.
  • the interface 41 of the expansion device 40 can be an Ethernet interface.
  • the interface 41 of the expansion device 40 can be a real-time Ethernet interface.
  • the interface 41 of the expansion device 40 can be an EtherCAT ("Ethernet for Control Automation Technology") interface.
  • the transformer testing device 10 has an interface 20 for communication with the interface 41 of the expansion device 40.
  • the interface 20 of the transformer testing device 10 can be a digital interface.
  • the interface 20 of the transformer testing device 10 can be an Ethernet interface.
  • the interface 20 of the transformer testing device 10 can be a real-time Ethernet interface.
  • the interface 20 of the transformer testing device 10 can be an EtherCAT interface. In further exemplary embodiments, the interface 20 can be omitted, for example with reference to FIG Figure 8 will be described in more detail.
  • the transformer testing device 2 has a plurality of connections 12 for connecting the transformer testing device 2 to the three-winding transformer 60.
  • the plurality of terminals 12 can be configured to allow simultaneous connection to at least three windings of the three winding transformer 60, which can be a primary winding, a secondary winding, and a tertiary winding.
  • the plurality of terminals 12 can be configured to be connected to more than three windings.
  • the transformer test apparatus 2 may have terminals 12 adapted for connection to multiple windings of each of multiple phases of a three-phase, three-winding transformer.
  • the plurality of connections 12 can also be distributed in other ways between the transformer testing device 10 and the expansion device 40.
  • the expansion device 40 can have connections for connection to several windings of one phase of a three-phase three-winding transformer.
  • the expansion device 40 can include a control device 42.
  • the controller 42 may include one or more semiconductor integrated circuits.
  • the control device 42 can comprise a processor, a microprocessor, a controller, a microcontroller, an application-specific special circuit (ASIC) or a combination of several such integrated semiconductor circuits.
  • ASIC application-specific special circuit
  • the control device 42 can be set up to control a controllable switching means in order to short-circuit a winding or a switching group of the three-winding transformer 60.
  • the control device 42 can be connected to the interface 41 in order to short-circuit at least one winding of the three-winding transformer 60 depending on the data received at the interface 41.
  • the control device 42 can activate the controllable switching means in a synchronized manner with a test procedure carried out under the control of the transformer testing device 10.
  • the expansion device 40 can be synchronized with the transformer testing device 10 via the interface 41.
  • the control device 42 can alternatively or additionally be set up to report information about a test result recorded by the expansion device 40 to the transformer test device 10 via the interface 41. To this end, the control device 42 can convert and optionally further process an output signal from a voltmeter, an ammeter or another measuring device in order to transmit it to the transformer testing device via the interface 41.
  • the transformer test device 10 can include the evaluation device 18 which determines parameters of the three-winding transformer 60 as a function of the test response that is detected on one or more windings of the three-winding transformer 60.
  • the transformer testing device 10 can have a user interface (not shown in the figure) via which information about the three-winding transformer 60 can be entered. For example, a type designation for the three-winding transformer 60 can be entered via the user interface.
  • the transformer testing device 10 can, depending on the type designation, call up information about the vector group from a non-volatile memory. Alternatively or additionally, the vector group of the three-winding transformer 60 can be entered via the user interface.
  • the evaluation device 18 can use the information about the vector group for further processing of the test response, in particular for the computational or map-based determination of at least one parameter of the three-winding transformer 60.
  • the transformer testing device 10 can be set up to automatically recognize when the expansion device 40 is coupled to the transformer testing device 10 via the interfaces 20, 41.
  • the expansion device 40 can via the interface 41 output data to the transformer testing device 10, which indicates that the expansion device 40 is connected to the transformer testing device 10.
  • the expansion device 40 can output further data to the transformer testing device 10 via the interface 41, which data indicates that the expansion device 40 has been coupled to the three-winding transformer 60 via the connections 44.
  • the transformer testing device 10 can change a procedure for the transformer testing depending on whether the expansion device 40 is connected to the transformer testing device 10. For example, when the expansion device 40 is connected to the transformer tester 10, the transformer tester 10 can short-circuit at least one winding of the three-winding transformer 60 during part of the transformer test. The transformer testing device 10 can, when the expansion device 40 is connected to the transformer testing device 10, cause the expansion device 40 to short-circuit at least one other winding of the three-winding transformer 60 at the same time or at different times.
  • FIG. 3 is an illustration of a system 1 including a transformer test apparatus 2 and a three-winding transformer 60.
  • Components and devices identified by the same reference numerals as in FIG Figure 1 may be provided as referring to Figure 1 be designed as described.
  • the transformer testing device 2 comprises a transformer testing device 10 and an expansion device 40 different therefrom.
  • the expansion device 40 can have a separate housing 51 and can be connected to the transformer testing device 10 via a digital interface 41.
  • the expansion device 40 has a plurality of connections 45, 46 for connection to at least one winding of the three-winding transformer 60.
  • the expansion device 40 can be set up, for example, to be coupled to a tertiary winding of a three-winding transformer 60 via the plurality of connections 45, 46.
  • the expansion device 40 can be set up to be conductively connected via the connections 45, 46 to at least one winding of the three-winding transformer 60, to which the transformer testing device 10 itself is not conductively connected.
  • the plurality of connections 45, 46 of the expansion device 40 can be set up to measure the resistance of the at least one winding of the three-winding transformer 60 to allow.
  • the plurality of connections 45, 46 can be set up to enable a resistance measurement as a four-point measurement in which, for example, a current is impressed and the voltage is detected via separate lines.
  • the expansion device 40 can comprise a controllable switching means 48.
  • the controllable switching means 48 can be activated directly by the transformer testing device 10 via the interface 41 in order to short-circuit at least one winding of the three-winding transformer 60.
  • the controllable switching means 48 can be activated by a control device 42 of the expansion device 40 in order to short-circuit at least one winding of the three-winding transformer 60.
  • the control device 42 can control the controllable switching means 48 in order to short-circuit at least one winding of the three-winding transformer 60.
  • the controllable switching means 48 can be a relay or can comprise a relay.
  • the controllable switching means 48 can be an insulated gate bipolar transistor (IGBT) or a field effect transistor (FET) or can comprise an IGBT or an FET.
  • IGBT insulated gate bipolar transistor
  • the expansion device 40 can have one or more measuring devices 47, 49 for recording a test response of the three-winding transformer 60. Information about the recorded test response can be transmitted from the one or more measuring devices 47, 49 directly to the transformer test device 10 via the interface 41.
  • the control device 42 of the expansion device 10 can further convert output signals of the one or more measuring devices 47, 49, for example to calculate a resistance, a reactance, a phase position and / or a power, and to send the processed output signals via the interface 41 the transformer tester 10 to transmit.
  • the transformer testing device 10 can with its evaluation device 18 further process a test response that was recorded by at least one measuring device 14, 16 of the transformer testing device 10, and a further test response that was recorded by at least one measuring device 47, 49 of the expansion device 40.
  • the test response, which was recorded by at least one measuring device 14, 16 of the transformer test device 10, and the further test response, which was recorded by at least one measuring device 47, 49 of the expansion device 40 can be recorded on different windings of the three-winding transformer 60.
  • test response that was recorded by at least one measuring device 14, 16 of the transformer test device 10 can be recorded on a primary or secondary winding of the three-winding transformer 60
  • further test response that was recorded by at least one measuring device 47, 49 of the expansion device 40 can be detected on a tertiary winding of the three-winding transformer 60
  • the test response, which was recorded by at least one measuring device 14, 16 of the transformer test device 10 can be recorded on a primary or tertiary winding of the three-winding transformer 60
  • the further test response, which was recorded by at least one measuring device 47, 49 of the expansion device 40 can be detected on a secondary winding of the three-winding transformer 60.
  • the test response which was recorded by at least one measuring device 14, 16 of the transformer test device 10, can be recorded on a secondary or tertiary winding of the three-winding transformer 60, and the further test response, which was recorded by at least one measuring device 47, 49 of the expansion device 40, can can be detected on a secondary winding of the three-winding transformer 60.
  • the transformer test device 10 can control the implementation of the test of the transformer and the further processing of the recorded test responses in such a way that one or more parameters of the three-winding transformer 60 are determined. For example, several transformation ratios of the transformer can be determined automatically by the evaluation device 18 without having to rewire for this purpose. Other parameters such as static or dynamic resistances or a leakage reactance and / or a leakage inductance of the transformer can also be determined. For this purpose, the evaluation device 18 can evaluate a test response which is recorded as a reaction to a test signal using measuring devices of the transformer test device 10 and the expansion device 40.
  • FIG. 3 is an illustration of a system 1 including a transformer test apparatus 2 and a three-winding transformer 60. Components and devices identified by the same reference numerals as in FIG Figure 1 may be provided as referring to Figure 1 be designed as described.
  • the transformer testing device 2 comprises a transformer testing device 10 and an expansion device 40 different therefrom.
  • the expansion device 40 can be a separate one Have housing 51 and can be connected to transformer testing device 10 via a digital interface 41.
  • the expansion device 40 has a plurality of connections 45, 46 for connection to at least one winding of the three-winding transformer 60.
  • the expansion device 40 can be set up, for example, to be coupled to a tertiary winding of a three-winding transformer 60 via the plurality of connections 45, 46.
  • the expansion device 40 can be set up to be conductively connected via the connections 45, 46 to at least one winding of the three-winding transformer 60, to which the transformer testing device 10 itself is not conductively connected.
  • the expansion device 40 has a source 52.
  • the source 52 can be set up to impress a signal as a test signal in at least one winding of the three-winding transformer 60.
  • the source 52 can be controlled by the transformer testing device 10.
  • the control can take place directly in such a way that the source 52 is coupled to the interface 41 and the transformer testing device 10 controls the source 52 in real time.
  • the control can include a conversion of data received at the interface 41 by the control device 42 of the expansion device 40.
  • the source 52 may be a current source controllable to generate an alternating current as a test signal.
  • the source 52 can be controllable to generate alternating currents at several different frequencies as a test signal.
  • the source 52 can also be a voltage source.
  • the source 52 can be operated in different operating modes, for example as a current source or as a voltage source and / or as a source of a signal that is constant over time or an alternating signal.
  • the test signal generated by the source 52 can be impressed on at least one winding on the low voltage side 43 via the connections 45 and the lines between the connections 45 and the three-winding transformer 60.
  • the source 13 of the transformer testing device 10 and the source 52 of the expansion device 40 can be controlled in a time-coordinated manner under the control of the control device 18.
  • the source 13 of the transformer test device 10 and the source 52 of the expansion device 40 can be controlled in such a way that the test signal is fed in sequentially from different sources into different windings and the test response is recorded in each case.
  • Figure 4 is a functional block diagram of an expansion device 40 according to one embodiment. Several of the functional blocks shown can be implemented by the same physical unit.
  • the expansion device 40 is designed for connection to a transformer testing device 10.
  • the expansion device 40 has an interface 41 which can be designed as a digital interface.
  • the interface 41 of the expansion device 40 can be an Ethernet interface.
  • the interface 41 of the expansion device 40 can be a real-time Ethernet interface.
  • the interface 41 of the expansion device 40 can be an EtherCAT interface.
  • the expansion device 40 can have a module 71 for converting signals received at the interface 41.
  • the module 71 can process received signals in order to decode data received from the transformer test device 10 from the received signals.
  • the module 71 can convert information about a test response or other information that is to be transmitted from the expansion device 40 to the transformer test device 10 into signals which are output via the interface 41.
  • the expansion device 40 can comprise a module 72 for synchronization with the transformer test device 10.
  • the module 72 for synchronization can generate a synchronization in such a way that measuring processes and / or switching processes and / or the generation of a test signal from the expansion device 40 is carried out synchronized with a test sequence that is defined by the transformer test device 10.
  • the module 72 for synchronization can also be omitted, for example if the expansion device 40 is controlled via a real-time interface.
  • the expansion device 40 can include a module 73 for executing control functions.
  • the module 73 for executing control functions can control at least one controllable switching means of the expansion device 40 in response to data received at the interface 41.
  • the control can take place as real-time control or with a time offset to the data reception.
  • the module 73 for executing control functions can control the at least one controllable switching means for short-circuiting at least one winding of the three-winding transformer 40.
  • the module 73 can be set up to execute control functions in order to control a source 52 of the expansion device 40.
  • the module 73 for performing control functions can control the source 52 in response to data received at the interface 41.
  • the control can take place as real-time control or with a time offset to the data reception.
  • the expansion device 40 can include one or more units 74 that are controllable.
  • the controllable unit 74 or the controllable units 74 can have a controllable switching means 47, a source 52 or other units.
  • the expansion device 40 can comprise one or more measuring devices 75 for recording a test response.
  • the measuring device (s) 75 can have a voltmeter, an ammeter, a wattmeter or other measuring devices.
  • the expansion device 40 can include a module 76 for reporting a test response back to the transformer test device 10.
  • the module 76 for reporting back a test response can process output signals from the measuring device (s) 75 further.
  • the module 76 can determine a phase position of a test response relative to a test signal in order to report the phase position back to the transformer testing device 10.
  • an integrated semiconductor circuit can perform the functions of module 73 for control, module 71 for coding and decoding signals, and module 76 for reporting back a test response.
  • the transformer testing device 2 can be used for three-winding transformers of different vector groups and different vector groups.
  • Figure 5 shows a system 1 with a transformer testing device 2 according to an embodiment.
  • the transformer testing device 2 is coupled to a Yndd three-winding transformer 60.
  • the three-winding transformer 60 has three primary windings 61, which are shown in FIG a star configuration with a grounded star point.
  • the three-winding transformer 60 has three secondary windings 62 in a delta connection.
  • the three-winding transformer 60 has three tertiary windings 63 in a delta connection.
  • the transformer testing device 10 can be conductively connected to at least one primary winding 64 and to at least one secondary winding 65.
  • the expansion device 40 can be conductively connected to at least one tertiary winding 66 to which the transformer testing device 10 itself is not conductively connected.
  • the transformer testing device 2 can also be used in such a way that the transformer testing device 10 is conductively connected to at least one secondary winding and to at least one tertiary winding and the expansion device 40 is conductively connected to at least one primary winding to which the transformer testing device 10 itself is not conductively connected is.
  • the transformer testing device 2 can also be used in such a way that the transformer testing device 10 is conductively connected to at least one primary winding and to at least one tertiary winding and the expansion device 40 is conductively connected to at least one secondary winding to which the transformer testing device 10 itself is not conductively connected is.
  • transformer testing device 2 The functioning and configuration of the transformer testing device 2 can be as described with reference to FIG Figure 1 to Figure 4 be implemented as described.
  • FIG. 6 shows a system 1 with a transformer testing device 2 according to an embodiment.
  • the transformer testing device 2 is coupled to a Yndd three-winding transformer 60.
  • the transformer testing device 2 can be conductively connected to several primary windings, to several secondary windings and / or to several tertiary windings.
  • the transformer testing device 10 can be conductively connected to the primary windings 61 and to the secondary windings 62.
  • the expansion device 40 can be conductively connected to the tertiary windings 63, with which the transformer tester 10 itself is not conductively connected.
  • the transformer testing device 2 can also be used in such a way that the transformer testing device 10 is conductively connected to the secondary windings and the tertiary windings and the expansion device 40 is conductively connected to the primary windings to which the transformer testing device 10 itself is not conductively connected.
  • the transformer testing device 2 can also be used in such a way that the transformer testing device 10 is conductively connected to the primary windings and the tertiary windings and the expansion device 40 is conductively connected to the secondary windings to which the transformer testing device 10 itself is not conductively connected.
  • transformer testing device 2 can be as described with reference to FIG Figure 1 to Figure 4 be implemented as described.
  • the transformer test device 2 can selectively impress a test signal in one or more windings and record the test response on one or more other windings.
  • the transformer testing device 2 can be used to test transformers of different vector groups.
  • the use is not limited to Yndd transformers, as in Figure 7 is shown by way of example.
  • Figure 5 shows a system 1 with a transformer testing device 2 according to an embodiment.
  • the transformer testing device 2 is coupled to a Ynynd three-winding transformer 60.
  • the three-winding transformer 60 has three primary windings 61, which are connected in a star configuration with a grounded star point.
  • the three-winding transformer 60 has three secondary windings 62 which are connected in a star configuration with a grounded star point.
  • the three-winding transformer 60 has three tertiary windings 63 in a delta connection.
  • the transformer testing device 10 can be conductively connected to at least one primary winding 64 and to at least one secondary winding 65.
  • the expansion device 40 can be conductively connected to at least one tertiary winding 66, to which the transformer testing device 10 itself is not conductively connected.
  • the transformer testing device 2 can also be used in such a way that the transformer testing device 10 is conductively connected to at least one secondary winding and to at least one tertiary winding and the expansion device 40 is conductively connected to at least one primary winding to which the transformer testing device 10 itself is not conductively connected is.
  • the transformer testing device 2 can also be used in such a way that the transformer testing device 10 is conductively connected to at least one primary winding and to at least one tertiary winding and the expansion device 40 is conductively connected to at least one secondary winding to which the transformer testing device 10 itself is not conductively connected is.
  • transformer testing device 2 The functioning and configuration of the transformer testing device 2 can be as described with reference to FIG Figure 1 to Figure 4 be implemented as described.
  • Example transformer testing devices 2 were shown and described, in which the transformer testing device 2 comprises a combination of transformer testing device 10 and expansion device 40, the transformer testing device 2 itself can also be designed as a single device.
  • Figure 8 shows a system 1 with a transformer testing device 2 for determining a parameter of a three-winding transformer 60 according to an embodiment.
  • the system 1 comprises the three-winding transformer 60 and the transformer testing device 70.
  • the transformer testing device 70 is designed as a single transformer testing device 70 with a housing 11.
  • the transformer testing device 70 can be designed as a mobile device and in particular as a portable device.
  • the transformer tester 70 has additional connections to enable simultaneous connection to the windings of the three-winding transformer 60.
  • the transformer tester 70 may have terminals 12 for connection to a primary winding, a secondary winding, and a tertiary winding Winding of the three-winding transformer 60, which are provided on the housing 11.
  • the transformer test device 70 comprises a plurality of connections 12 for connection to the three-winding transformer 60, a source 13 for a test signal that is applied to or impressed on the three-winding transformer 60 as a test object during the transformer test, and an evaluation device 18.
  • One or more measuring devices 14, 16 , 73 for detecting a test response of the three-winding transformer 60 can be integrated in the transformer tester 70.
  • One or more controllable switching means 15 can be integrated into the transformer testing device 70.
  • the source 13, at least one measuring device 14, 16 and an evaluation device 18 can be installed in a housing 11 of the transformer testing device 70.
  • a plurality of connections 12 is provided on the housing 11.
  • the plurality of terminals may include terminals for simultaneous conductive connection to at least one primary winding, at least one secondary winding, and at least one tertiary winding of the transformer tester 70.
  • connections 21 can be provided in order to feed a test signal into at least one primary winding.
  • a test response can be detected on the at least one primary winding via connections 22.
  • At least one secondary winding can be short-circuited via connections 23, 24 and / or a test response can be recorded on the at least one secondary winding.
  • At least one tertiary winding can be short-circuited via connections 74 and / or a test response can be recorded on the at least one tertiary winding.
  • connections 21 can be provided in order to feed a test signal into at least one secondary winding.
  • a test response can be detected on the at least one secondary winding via connections 22.
  • At least one primary winding can be short-circuited via connections 23, 24 and / or a test response can be recorded on the at least one primary winding.
  • At least one tertiary winding can be short-circuited via connections 74 and / or a test response can be recorded on the at least one tertiary winding.
  • connections 21 can be provided in order to feed a test signal into at least one tertiary winding.
  • a test response can be recorded on the at least one tertiary winding via connections 22.
  • At least one primary winding can be short-circuited via connections 23, 24 and / or a test response can be recorded on the at least one primary winding.
  • At least one secondary winding can be short-circuited via connections 74 and / or a test response can be recorded on the at least one secondary winding.
  • Figure 9 Figure 8 is a flow diagram of a method 80 according to an embodiment.
  • the method 80 can be carried out automatically by the transformer testing device 2 according to one exemplary embodiment.
  • the method 80 can be carried out automatically by the expansion device 40 of the transformer testing device 2.
  • the expansion device 40 receives data from a transformer testing device 10 via an interface 41.
  • the data can include synchronization data with which the expansion device 40 is synchronized with the transformer testing device 10.
  • the data can include control commands for at least one controllable switching means and / or for a source for a test signal.
  • the expansion device can execute a procedure for automatic synchronization with the transformer test device 10.
  • the expansion device 40 can control a controllable switching means, a controllable source for the test signal and / or another controllable unit in response to the received data.
  • the expansion device 40 can control a controllable switching means during at least part of a transformer test in such a way that at least one winding of the three-winding transformer is short-circuited.
  • the expansion device 40 can record a test response of at least one winding of the three-winding transformer in step 83.
  • the test response can be an alternating voltage or an alternating current that is detected as a function of time.
  • step 84 the expansion device 40 can output data to the transformer testing device 10 via the interface 41.
  • the test response can be reported to the transformer test device 10 via the interface 41.
  • the method 80 can include further steps.
  • the method can include the evaluation of a user input with which it is possible to define in a user-defined manner which parameters of the three-winding transformer 60 are determined.
  • the method can include the evaluation of a user input with which it is possible to define in a user-defined manner which vector group or vector group the three-winding transformer 60 has.
  • transformer test devices can alternatively or additionally determine other parameters of the three-winding transformer.
  • the transformer testing device can comprise a controllable switching means for short-circuiting a winding of the three-winding transformer
  • the transformer testing device can also have two or more than two controllable switching means for short-circuiting several windings of the three-winding transformer or no such controllable switching means.
  • the transformer test device can be set up to short-circuit a plurality of windings simultaneously or in a time-sequential manner.
  • the expansion device itself can also have more than one controllable switching means for short-circuiting at least one winding.
  • the device and the method according to the exemplary embodiments can also be used if only one parameter of the three-winding transformer, for example only the transformation ratio or only the leakage reactance, is measured before new user input is required.
  • the three-winding transformer can be installed in a power station or substation of an energy supply network, the device and the method according to the exemplary embodiments can also be used with smaller transformers.
  • Apparatus, methods and systems according to exemplary embodiments allow a large number of parameters of a three-winding transformer to be determined and enable further automation in the transformer test.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Testing Relating To Insulation (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Claims (15)

  1. Dispositif de test de transformateur destiné à tester un transformateur à trois enroulements (60), comprenant
    une source (13 ; 13, 52) destinée à générer des signaux de test pour le transformateur à trois enroulements (60),
    un équipement de mesure (14, 16 ; 14, 16, 47, 49) destiné à détecter une réponse de test du transformateur à trois enroulements (60),
    des connexions (12) destinées à raccorder de manière amovible le dispositif de test de transformateur (2 ; 70) au transformateur à trois enroulements (60),
    un appareil de test de transformateur (10), et
    un appareil d'extension (40) différent de l'appareil de test de transformateur (10) et qui peut être raccordé à l'appareil de test de transformateur (10),
    les connexions (12) comprenant au moins une connexion (44 ; 45, 46) destinée au raccordement à un enroulement tertiaire (66) du transformateur à trois enroulements (60), et
    l'appareil d'extension (40) comprenant l'au moins une connexion (44 ; 45, 46) destinée au raccordement à l'enroulement tertiaire (66),
    caractérisé en ce
    que l'appareil de test de transformateur (10) peut être reconfiguré par l'appareil d'extension (40) pour tester le transformateur à trois enroulements (60).
  2. Dispositif de test de transformateur selon la revendication 1,
    dans lequel les connexions (12) comprennent au moins une première connexion destinée au raccordement à un enroulement primaire (64) du transformateur à trois enroulements (60) et au moins une seconde connexion destinée au raccordement à un enroulement secondaire (65) du transformateur à trois enroulements (60), lesquelles connexions sont différentes de l'au moins une connexion destinée au raccordement à l'enroulement tertiaire (66).
  3. Dispositif de test de transformateur selon la revendication 1 ou la revendication 2,
    dans lequel l'appareil d'extension (40) comprend une interface numérique (41) par l'intermédiaire de laquelle l'appareil d'extension (40) est raccordé à l'appareil de test de transformateur (10), dans lequel l'appareil d'extension (40) est configuré pour une synchronisation avec l'appareil de test de transformateur (10) par l'intermédiaire de l'interface numérique (41), et
    dans lequel l'appareil d'extension (40) est configuré pour rapporter des informations concernant la réponse de test à l'appareil de test de transformateur (10) par l'intermédiaire de l'interface numérique (41).
  4. Dispositif de test de transformateur selon l'une des revendications 1 à 3,
    dans lequel l'appareil d'extension (40) comprend un moyen de commutation commandable (48) destiné à court-circuiter au moins un enroulement du transformateur à trois enroulements (60), et
    dans lequel l'appareil d'extension (40) est configuré pour court-circuiter sélectivement au moins un enroulement secondaire ou au moins un enroulement tertiaire du transformateur à trois enroulements (60) afin d'effectuer une mesure de réactance de fuite.
  5. Appareil d'extension pour un appareil de test de transformateur (10), comprenant
    une interface (41) destinée à la communication avec l'appareil de test de transformateur (10) et
    au moins une connexion (44 ; 45, 46) destinée à raccorder de manière amovible l'appareil d'extension (40) à un enroulement d'un transformateur à trois enroulements (60), l'au moins une connexion (44 ; 45, 46) de l'appareil d'extension (40) étant configurée pour un raccordement à un enroulement tertiaire (66) du transformateur à trois enroulements (60),
    caractérisé en ce
    que l'appareil d'extension (40) est configuré pour reconfigurer l'appareil de test de transformateur (10) afin de tester le transformateur à trois enroulements (60).
  6. Appareil d'extension selon la revendication 5,
    dans lequel l'appareil d'extension (40) ou l'appareil de test de transformateur (10) comprend au moins une seconde connexion (23, 24) destinée au raccordement à un enroulement secondaire (65) du transformateur à trois enroulements (60) et qui est différente de l'au moins une connexion (44 ; 45, 46) destinée au raccordement à l'enroulement tertiaire.
  7. Appareil d'extension selon la revendication 5 ou la revendication 6,
    dans lequel l'interface (41) comprend une interface numérique (41),
    dans lequel l'appareil d'extension (40) est configuré pour une synchronisation avec l'appareil de test de transformateur (10) par l'intermédiaire de l'interface numérique (41), et
    dans lequel l'appareil d'extension (40) est configuré pour rapporter des informations concernant une réponse de test du transformateur à trois enroulements (60) en tant que signal de test à l'appareil de test par l'intermédiaire de l'interface numérique (41).
  8. Appareil d'extension selon l'une des revendications 5 à 7,
    dans lequel l'appareil d'extension (40) comprend un moyen de commutation commandable destiné à court-circuiter au moins un enroulement du transformateur à trois enroulements (60), et dans lequel l'appareil d'extension (40) est configuré pour court-circuiter sélectivement au moins un enroulement secondaire ou au moins un enroulement tertiaire du transformateur à trois enroulements (60) afin d'effectuer une mesure de réactance de fuite.
  9. Système, comprenant
    un transformateur à trois enroulements (60), et
    l'appareil d'extension (40) selon l'une des revendications 5 à 8, l'appareil d'extension (40) étant raccordé à au moins un enroulement du transformateur à trois enroulements (60).
  10. Système selon la revendication 9,
    dans lequel un enroulement primaire, un enroulement secondaire et un enroulement tertiaire du transformateur à trois enroulements (60) sont couplés au même noyau de transformateur.
  11. Système selon la revendication 9,
    dans lequel le transformateur à trois enroulements (60) est un transformateur triphasé à trois enroulements.
  12. Système selon l'une des revendications 9 à 11, comprenant
    un appareil de test de transformateur (10) différent de l'appareil d'extension (40) et raccordé à l'appareil d'extension (40).
  13. Système selon la revendication 12,
    dans lequel l'appareil de test de transformateur (10) ainsi que l'appareil d'extension (40) sont directement raccordés au transformateur à trois enroulements (60).
  14. Procédé destiné à tester un transformateur à trois enroulements (60) comportant un dispositif de test de transformateur (2 ; 70), les connexions (12) destinées à raccorder de manière amovible le dispositif de test de transformateur au transformateur à trois enroulements (60), un appareil de test de transformateur (10) et un appareil d'extension (40) différent de l'appareil de test de transformateur (10) et pouvant être raccordé à l'appareil de test de transformateur (10), le procédé comprenant :
    la génération d'un signal de test pour le transformateur à trois enroulements (60) et
    la détection d'une réponse de test du transformateur à trois enroulements (60),
    dans lequel les connexions (12) comprennent au moins une connexion destinée à raccorder le dispositif de test de transformateur à un enroulement tertiaire (66) du transformateur à trois enroulements (60), et
    l'appareil d'extension (40) comprenant l'au moins une connexion (44 ; 45, 46) destinée au raccordement à l'enroulement tertiaire (66),
    caractérisé en ce
    que l'appareil de test de transformateur (10) est reconfiguré par l'appareil d'extension (40) pour tester le transformateur à trois enroulements (60).
  15. Procédé selon la revendication 14,
    dans lequel le procédé est exécuté avec le dispositif de test de transformateur (2 ; 70) selon l'une des revendications 1 à 4, et
    dans lequel le dispositif de test de transformateur (2) comprend un appareil d'extension (40) selon l'une des revendications 5 à 8.
EP16702942.0A 2015-02-06 2016-02-04 Testeur de transformateur et procédé de test d'un transformateur à trois enroulements Active EP3254127B1 (fr)

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PCT/EP2016/052402 WO2016124698A1 (fr) 2015-02-06 2016-02-04 Testeur de transformateur et procédé de test d'un transformateur à trois enroulements

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CN107037315B (zh) * 2017-04-16 2019-09-20 赵浩 一种大型车间巡检员用电机绕组检测装置
CN110514915A (zh) * 2018-05-22 2019-11-29 株洲变流技术国家工程研究中心有限公司 一种多脉波整流移相变压器测试方法及系统
AT521563A1 (de) * 2018-07-26 2020-02-15 Omicron Electronics Gmbh Prüfvorrichtung, Verfahren und System zum Prüfen eines Mehrphasen-Stufenschalters eines Mehrphasen-Transformators
CN114062863B (zh) * 2021-11-11 2023-07-04 国网四川省电力公司南充供电公司 一种便于安装的变压器局部放电监测装置

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US6853939B2 (en) * 2002-01-18 2005-02-08 Georgia Tech Research Corporation Systems and methods for multiple winding impulse frequency response analysis test
WO2009018850A1 (fr) * 2007-08-06 2009-02-12 Siemens Aktiengesellschaft Procédé de détermination de couplage de flux de dispersion magnétique d'un transformateur
EP2295996B1 (fr) * 2009-08-07 2011-09-28 Omicron electronics GmbH Système de surveillance d'un transformateur
ES2485377T3 (es) * 2012-05-15 2014-08-13 Omicron Electronics Gmbh Dispositivo de prueba, sistema de prueba y procedimiento de prueba de un objeto de prueba de ingeniería eléctrica
AU2013337365B2 (en) * 2012-11-05 2017-02-23 Doble Engineering Company Method and apparatus for testing utility power devices

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